// // "$Id: file_chooser.cxx,v 1.4.2.3.2.8 2002/07/14 18:19:00 easysw Exp $" // // File chooser test program. // // Copyright 1999-2002 by Michael Sweet. // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 // USA. // // Please report all bugs and problems to "fltk-bugs@fltk.org". // // Contents: // // main() - Create a file chooser and wait for a selection to // be made. // close_callback() - Close the main window... // fc_callback() - Handle choices in the file chooser... // pdf_check() - Check for and load the first page of a PDF file. // ps_check() - Check for and load the first page of a PostScript // file. // show_callback() - Show the file chooser... // // // Include necessary headers... // #include #include #include #include #include #include #include "../src/flstring.h" // // Globals... // Fl_Input *filter; Fl_File_Browser *files; Fl_File_Chooser *fc; Fl_Shared_Image *image = 0; // // Functions... // void close_callback(void); void create_callback(void); void dir_callback(void); void fc_callback(Fl_File_Chooser *, void *); void multi_callback(void); Fl_Image *pdf_check(const char *, uchar *, int); Fl_Image *ps_check(const char *, uchar *, int); void show_callback(void); // // 'main()' - Create a file chooser and wait for a selection to be made. // int // O - Exit status main(int argc, // I - Number of command-line arguments char *argv[]) // I - Command-line arguments { Fl_Window *window;// Main window Fl_Button *button;// Buttons Fl_File_Icon *icon; // New file icon // Make the file chooser... Fl::scheme(NULL); Fl_File_Icon::load_system_icons(); fc = new Fl_File_Chooser(".", "*", Fl_File_Chooser::SINGLE, "Fl_File_Chooser Test"); fc->callback(fc_callback); // Register the PS and PDF image types... Fl_Shared_Image::add_handler(pdf_check); Fl_Shared_Image::add_handler(ps_check); // Make the main window... window = new Fl_Window(400, 200, "File Chooser Test"); filter = new Fl_Input(50, 10, 315, 25, "Filter:"); if (argc > 1) filter->value(argv[1]); else filter->value("PDF Files (*.pdf)\t" "PostScript Files (*.ps)\t" "Image Files (*.{bmp,gif,jpg,png})\t" "C/C++ Source Files (*.{c,C,cc,cpp,cxx})"); button = new Fl_Button(365, 10, 25, 25); button->labelcolor(FL_YELLOW); button->callback((Fl_Callback *)show_callback); icon = Fl_File_Icon::find(".", Fl_File_Icon::DIRECTORY); icon->label(button); button = new Fl_Light_Button(50, 45, 80, 25, "MULTI"); button->callback((Fl_Callback *)multi_callback); button = new Fl_Light_Button(140, 45, 90, 25, "CREATE"); button->callback((Fl_Callback *)create_callback); button = new Fl_Light_Button(240, 45, 115, 25, "DIRECTORY"); button->callback((Fl_Callback *)dir_callback); files = new Fl_File_Browser(50, 80, 340, 75, "Files:"); files->align(FL_ALIGN_LEFT); button = new Fl_Button(340, 165, 50, 25, "Close"); button->callback((Fl_Callback *)close_callback); window->resizable(files); window->end(); window->show(); Fl::run(); return (0); } // // 'close_callback()' - Close the main window... // void close_callback(void) { exit(0); } // // 'create_callback()' - Handle clicks on the create button. // void create_callback(void) { fc->type(fc->type() ^ Fl_File_Chooser::CREATE); } // // 'dir_callback()' - Handle clicks on the directory button. // void dir_callback(void) { fc->type(fc->type() ^ Fl_File_Chooser::DIRECTORY); } // // 'fc_callback()' - Handle choices in the file chooser... // void fc_callback(Fl_File_Chooser *fc, // I - File chooser void *data) // I - Data { const char *filename; // Current filename printf("fc_callback(fc = %p, data = %p)\n", fc, data); filename = fc->value(); printf(" filename = \"%s\"\n", filename ? filename : "(null)"); } // // 'multi_callback()' - Handle clicks on the multi button. // void multi_callback(void) { fc->type(fc->type() ^ Fl_File_Chooser::MULTI); } // // 'pdf_check()' - Check for and load the first page of a PDF file. // Fl_Image * // O - Page image or NULL pdf_check(const char *name, // I - Name of file uchar *header, // I - Header data int headerlen) // I - Length of header data { const char *home; // Home directory char preview[1024], // Preview filename command[1024]; // Command if (memcmp(header, "%PDF", 4) != 0) return 0; home = getenv("HOME"); snprintf(preview, sizeof(preview), "%s/.preview.ppm", home ? home : ""); snprintf(command, sizeof(command), "gs -r100 -dFIXED -sDEVICE=ppmraw -dQUIET -dNOPAUSE -dBATCH " "-sstdout=\"%%stderr\" -sOUTPUTFILE=\'%s\' " "-dFirstPage=1 -dLastPage=1 \'%s\' 2>/dev/null", preview, name); if (system(command)) return 0; return new Fl_PNM_Image(preview); } // // 'ps_check()' - Check for and load the first page of a PostScript file. // Fl_Image * // O - Page image or NULL ps_check(const char *name, // I - Name of file uchar *header, // I - Header data int headerlen) // I - Length of header data { const char *home; // Home directory char preview[1024], // Preview filename outname[1024], // Preview PS file command[1024]; // Command FILE *in, // Input file *out; // Output file int page; // Current page char line[256]; // Line from file if (memcmp(header, "%!", 2) != 0) return 0; home = getenv("HOME"); snprintf(preview, sizeof(preview), "%s/.preview.ppm", home ? home : ""); if (memcmp(header, "%!PS", 4) == 0) { // PS file has DSC comments; extract the first page... snprintf(outname, sizeof(outname), "%s/.preview.ps", home ? home : ""); if (strcmp(name, outname) != 0) { in = fopen(name, "rb"); out = fopen(outname, "wb"); page = 0; while (fgets(line, sizeof(line), in) != NULL) { if (strncmp(line, "%%Page:", 7) == 0) { page ++; if (page > 1) break; } fputs(line, out); } fclose(in); fclose(out); } } else { // PS file doesn't have DSC comments; do the whole file... strlcpy(outname, name, sizeof(outname)); } snprintf(command, sizeof(command), "gs -r100 -dFIXED -sDEVICE=ppmraw -dQUIET -dNOPAUSE -dBATCH " "-sstdout=\"%%stderr\" -sOUTPUTFILE=\'%s\' \'%s\' 2>/dev/null", preview, outname); if (system(command)) return 0; return new Fl_PNM_Image(preview); } // // 'show_callback()' - Show the file chooser... // void show_callback(void) { int i; // Looping var int count; // Number of files selected char relative[1024]; // Relative filename fc->show(); if (filter->value()[0]) fc->filter(filter->value()); fc->show(); while (fc->visible()) Fl::wait(); count = fc->count(); if (count > 0) { files->clear(); for (i = 1; i <= count; i ++) { fl_filename_relative(relative, sizeof(relative), fc->value(i)); files->add(relative, Fl_File_Icon::find(fc->value(i), Fl_File_Icon::PLAIN)); } files->redraw(); } } // // End of "$Id: file_chooser.cxx,v 1.4.2.3.2.8 2002/07/14 18:19:00 easysw Exp $". //